package com.ckd.flyingtrip.utils;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.os.Environment;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Created by HITMAN on 2019/1/25.
 */
public class BitmapUtil {
        /**
         * 质量压缩方法
         *
         * @param image
         * @return
         */
        private static Bitmap compressImage(Bitmap image) {

            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            image.compress(Bitmap.CompressFormat.JPEG, 100, baos);
            int options = 100;
            while (baos.toByteArray().length / 1024 > 100) {
                baos.reset();
                image.compress(Bitmap.CompressFormat.JPEG, options, baos);
                options -= 10;
            }
            ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
            Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);
            return bitmap;
        }

        /**
         * 图片按比例大小压缩方法（根据路径获取图片并压缩）
         *
         * @param srcPath
         * @return
         */
        private static Bitmap getImage(String srcPath) {
            BitmapFactory.Options newOpts = new BitmapFactory.Options();
            newOpts.inJustDecodeBounds = true;
            Bitmap bitmap = BitmapFactory.decodeFile(srcPath, newOpts);// 此时返回bm为空

            newOpts.inJustDecodeBounds = false;
            int w = newOpts.outWidth;
            int h = newOpts.outHeight;
            // 现在主流手机比较多是800*480分辨率，所以高和宽我们设置为
            float hh = 800f;// 这里设置高度为800f
            float ww = 480f;// 这里设置宽度为480f
            // 缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可
            int be = 1;// be=1表示不缩放
            if (w > h && w > ww) {// 如果宽度大的话根据宽度固定大小缩放
                be = (int) (newOpts.outWidth / ww);
            } else if (w < h && h > hh) {// 如果高度高的话根据宽度固定大小缩放
                be = (int) (newOpts.outHeight / hh);
            }
            if (be <= 0)
                be = 1;
            newOpts.inSampleSize = be;// 设置缩放比例
            // 重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了
            bitmap = BitmapFactory.decodeFile(srcPath, newOpts);
            return compressImage(bitmap);// 压缩好比例大小后再进行质量压缩
        }

        /**
         * 将压缩的bitmap保存到SDCard卡临时文件夹，用于上传
         *
         * @param filename
         * @param bit
         * @return
         */
        private static String saveMyBitmap(String filename, Bitmap bit) {
            String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath()+"/laopai/";
            String filePath = baseDir + filename;
            File dir = new File(baseDir);
            if (!dir.exists()) {
                dir.mkdir();
            }

            File f = new File(filePath);
            try {
                f.createNewFile();
                FileOutputStream fOut = null;
                fOut = new FileOutputStream(f);
                bit.compress(Bitmap.CompressFormat.PNG, 100, fOut);
                fOut.flush();
                fOut.close();
            } catch (IOException e1) {
                e1.printStackTrace();
            }

            return filePath;
        }

        /**
         * 压缩上传路径
         * @param path
         * @return
         */
        public static String compressImageUpload(String path) {
            String filename = path.substring(path.lastIndexOf("/") + 1);
            int i = readPictureDegree(path);
            Bitmap image = getImage(path);
            Bitmap bitmap = rotaingImageView(i, image);
            return saveMyBitmap(filename, bitmap);
        }

    public static Bitmap rotaingImageView(int angle , Bitmap bitmap) {
        //旋转图片 动作
        Matrix matrix = new Matrix();;
        matrix.postRotate(angle);
        System.out.println("angle2=" + angle);
        // 创建新的图片
        Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,
                bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        return resizedBitmap;
    }



    //判断照片角度
    public static int readPictureDegree(String path) {
        int degree = 0;
        try {
            ExifInterface exifInterface = new ExifInterface(path);
            int orientation = exifInterface.getAttributeInt(
                    ExifInterface.TAG_ORIENTATION,
                    ExifInterface.ORIENTATION_NORMAL);
            switch (orientation) {
                case ExifInterface.ORIENTATION_ROTATE_90:
                    degree = 90;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_180:
                    degree = 180;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_270:
                    degree = 270;
                    break;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return degree;
    }







    /**
         * 清除缓存文件
         */
        public static void deleteCacheFile(){
            File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/laopai/");
            RecursionDeleteFile(file);
        }
        /**
         * 递归删除
         */
        private static void RecursionDeleteFile(File file){
            if(file.isFile()){
                file.delete();
                return;
            }
            if(file.isDirectory()){
                File[] childFile = file.listFiles();
                if(childFile == null || childFile.length == 0){
                    file.delete();
                    return;
                }
                for(File f : childFile){
                    RecursionDeleteFile(f);
                }
                file.delete();
            }
        }

}
